Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Tests DD: Fuel Rail Pressure (FRP) Sensor




NOTE
This Pinpoint Test is intended to diagnose the following:
- Fuel Rail Pressure (FRP) Sensor
- Harness Circuits: FRP and SIG RTN
- powertrain Control Module (PCM)

Tables and Graphs

Natural Gas Vehicles (FRP Voltage And Pressure Graph):





Natural Gas Vehicles (FRP Voltage And Pressure Specifications):





Gasoline Vehicles (FRP Voltage And Pressure Chart):





Gasoline Vehicles (FRP Voltage And Pressure Specifications):






Voltage values were calculated for VREF 5.0 volts. These values may vary 15 percent due to sensor and VREF variations.

Pinpoint Test Schematics and Connectors

Gasoline Vehicles (FRP Sensor Connector):





NG Vehicles (FRP Sensor Connector):






Pinpoint Tests